Can you help me with english?

Hi,

I came across this:

Ronny chieng calls kissinger a genocidal ....iego, i dont know that word at 5:36

What is the joke when he says andrew jackson did the numbers?

Carmen Sandiego

https://en.wikipedia.org/wiki/Carmen_Sandiego_(character)

He did the numbers: it means Andrew Jackson was the original genocidal maniac (president) in American history who wiped out countless American Indians and forced them into reservations to where the vast majority suffer now even to this day.